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. L. W. TRACY. MAUHIN COVERING INSULATED CONDUCTING WIRE ,WITHLEAD.

No. 43 '7. Patented Aug. 12, 1890.

7 UNITED STATES PATENT OFFICE.

'LEIVIS IV. TRACY, OF NEIV YORK, N. Y., ASSIGNOR OF ONE-HALF TO JAMES E. GRANNISS, OF SAME PLACE.

MACHINE FOR COVERING INSULATED CONDUCT|NG-W|RE WITH LEAD.

SPECIFICATION forming part of Letters Patent No. 434,007, dated August 12, 1890. Application filed May 28, 18901 Serial No. 5353, 267. (No model.)

To all whom it may concern.-

Be it known that I, LEWIS W. TRACY, a citizen of the United States, residing at New York, in the State of New York, have invented certain new and useful Improvements in Machines for Covering Insulated Electrical Conductors with Lead, of which the following is a specification.

The object of my invention is to produce a cheap, efficient, and practical machine for covering insulated conductors and cables with a lead pipe or sheath, though of course the invention may be used also for the manufacture of lead pipe. with what is known as the die-block that is ordinarily interposed between the head of the press and the cylinder in which the molten lead is contained, and I locate the pipeforming device in the base of the cylinder.

My improvements will be fully understood from the following specification.

In the accompanying drawings, Figure 1 is a vertical longitudinal section through an apparatus embodying my invention; Fig. 2, an end elevation of the block in which the corebar or core-bar holder is formed or mounted, showing also the plate or block on which it is seated; Fig. 3, a plan View of the same, and Fig. 4 a vertical section of a slightly-different construction.

A represents the head of the press, and B the lead-cylinder. the head of the press I- by preference place a block 0, and upon this block I mount the core-bar holder D, though in some cases the part D may constitute the core-bar itself. Of course I might mount the core-bar holder D immediately upon the head A of the press.

The core-bar or core-bar holder D is formed with a base d, which rests-upon the block (1, and maybe seated in adovetailed groove therein, as shown. One end of this core-bar holder is of conical form and tapering after the manner of an ordinary corebar, while its opposite enlarged end is turned or ground to exactly fit the circular wall of the lead-cylinder,

and the base (I is similarly ground or turned to exactly fit within the cylinder.

\Vhen the block 0 carrying the core-bar holder is placed upon the head of the press and the cylinder placed in position, the core- I by preference dispense.

Between the cylinder and end of the core-holder or core-bar is seated the die E. The die may be adjusted in its seat in the wall of the cylinder by means of a screw-threaded follower E.

If the part D constitutes the core-bar prop- I er, all the conditions exist for the manufacture of pipe or the covering of a cable or conductor with lead. The insulated conductor is led in through the hollow core-bar and through the die E, and the press being operated, the lead sheath is formed around it as it emerges from the machine through the hollow follower B By preference a sleeve F is passed through the opening B in the wall of the cylinder, and screws into the core-bar holder, as shown both in Figs. 1 and 4, and when a core-bar Gis seated withinthe holder D the sleeve F serves as a follower, by means of which it may be adjusted.

The purpose of inserting the core-bar G, as shown in Fig. 1, is to reduce the diameter to adapt the machine for c'overing a smaller conductor. By removing the part Gand employing -a die E of proper size a larger conductor or cable may be covered, the part D serving as the core-bar proper; but in any event I always prefer to use the sleeve F, because in the event of a minute quantity of lead flowing through the joint between the rear of the part D and the wall of the cylinder it could not reach the insulated conductor or cable.

As shown in Fig. 4., instead of mounting the part D in a dovetailed groove in the block 0, it may be seated thereupon and its accurate position assured by a dowel-pin H on the base 01, entering a socket in the block 0, and similarly the exact position of the cylinderB may be insured by means of dowel-pins b on the under face of the cylinder, which enter corresponding sockets in the block 0.

I claim as my invention- 1. The combination, substantially as set forth, of the vertical cylinder, a horizontal core-bar arranged within the lower end of the cylinder opposite concentric transverse openings in the walls of the cylinder, one of which communicates with the interior of the corebar, and a die located in the opposite opening.

2. The combination, substantially as set forth, with the cylinder, of a core-bar or corebar holder which accurately fits within the lower end of the cylinder, the transverse opening through the wall of the cylinder communicating with the interior of the core-bar holder, and a sleeve F passing through said opening and seated in the core-bar holder, an opposite concentric opening 13 in the wall of the cylinder, and a die seated therein.

3. The combination of the head of the press A, the cylinder B, the interposed block 0, the

core-bar or core-bar holder D, seated upon said block and fitting within the lower end of the cylinder, and transverse concentric passages in the walls of the cylinder, one of which communicates with the interior core-bar, and a die arranged in the other, substantially a set forth.

4. The combination of a lead-cylinder with a core-bar holderhaving abase d and a conical core-bar portion,the holderbcing adapted to fitaccurately in the lower end of the cylinder, substantially as and for the purpose set forth.

In testimony whereof I have hereunto subscribed my name.

' LEWIS WV. TRACY. Witnesses:

FRANK S. OBER, LLOYD B. WIGHT. 

